diff --git a/CVE-2025-5683.patch b/CVE-2025-5683.patch
new file mode 100644
index 0000000000000000000000000000000000000000..c82bfcbc9e063aa99abd928e906b09f1c0217fae
--- /dev/null
+++ b/CVE-2025-5683.patch
@@ -0,0 +1,43 @@
+From efd332516f510144927121fa749ce819b82ec633 Mon Sep 17 00:00:00 2001
+From: Samuel Gaist <samuel.gaist@idiap.ch>
+Date: Fri, 09 May 2025 17:12:49 +0200
+Subject: [PATCH] Fix validation issue for ICNS image
+
+The header validation logic could trigger an assert when an invalid ICNS
+image was loaded. This patch fixes the validation logic.
+
+Credit to OSS-Fuzz
+
+Fixes: QTBUG-136707
+Pick-to: 6.9 6.8 6.5
+Change-Id: I9571b9fd0b53d07ceee9792c9418472e949eff30
+Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
+---
+
+diff --git a/src/plugins/imageformats/icns/qicnshandler.cpp b/src/plugins/imageformats/icns/qicnshandler.cpp
+index 6cf74b2..501394d 100644
+--- a/src/plugins/imageformats/icns/qicnshandler.cpp
++++ b/src/plugins/imageformats/icns/qicnshandler.cpp
+@@ -324,8 +324,11 @@
+ 
+ static inline bool isBlockHeaderValid(const ICNSBlockHeader &header, quint64 bound = 0)
+ {
+-    return header.ostype != 0 && (bound == 0
+-                || qBound(quint64(ICNSBlockHeaderSize), quint64(header.length), bound) == header.length);
++    return header.ostype != 0 &&
++        (bound == 0 ||
++            // qBound can be used but requires checking the limits first
++            // this requires less operations
++            (ICNSBlockHeaderSize <= header.length && header.length <= bound));
+ }
+ 
+ static inline bool isIconCompressed(const ICNSEntry &icon)
+@@ -870,7 +873,7 @@
+             return false;
+ 
+         const qint64 blockDataOffset = device()->pos();
+-        if (!isBlockHeaderValid(blockHeader, ICNSBlockHeaderSize + filelength - blockDataOffset)) {
++        if (!isBlockHeaderValid(blockHeader, ICNSBlockHeaderSize - blockDataOffset + filelength)) {
+             qWarning("QICNSHandler::scanDevice(): Failed, bad header at pos %s. OSType \"%s\", length %u",
+                      QByteArray::number(blockDataOffset).constData(),
+                      nameFromOSType(blockHeader.ostype).constData(), blockHeader.length);
diff --git a/qt5-qtbase.spec b/qt5-qtbase.spec
index b9fd28993f45e95b8f4f0a099cefeb810c36f8d6..ef7a9fe2d5a07ddd959724fe5144f6ccba5a8bb6 100644
--- a/qt5-qtbase.spec
+++ b/qt5-qtbase.spec
@@ -34,7 +34,7 @@ BuildRequires:    pkgconfig(libsystemd)
 Name:             qt5-qtbase
 Summary:          Qt5 - QtBase components
 Version:          5.15.2
-Release:          18
+Release:          19
 
 
 # See LGPL_EXCEPTIONS.txt, for exception details
@@ -136,6 +136,7 @@ Patch1002:        qtbase5.15-CVE-2023-51714.patch
 Patch1003:        CVE-2023-45935.patch
 Patch1004:        CVE-2025-30348.patch
 Patch1005:        CVE-2025-5455-qtbase-5.15.patch
+Patch1006:        CVE-2025-5683.patch
 
 # Do not check any files in %%{_qt5_plugindir}/platformthemes/ for requires.
 # Those themes are there for platform integration. If the required libraries are
@@ -1007,6 +1008,9 @@ fi
 
 
 %changelog
+* Thu Oct 16 2025 yujingbo <yujingbo@kylinos.cn> - 5.15.2-19
+- fix CVE-2025-5683
+
 * Sat Jun 07 2025 Funda Wang <fundawang@yeah.net> - 5.15.2-18
 - fix CVE-2025-5455